verb
1To say ‘yea’; (hence) to assent, agree; to respond positively; to be a yea-sayer.
2To say ‘yea’ to (a person); to assent or agree to (something).
Origin
Late 19th century; earliest use found in William Morris (1834–1896), designer, author, and visionary socialist. From yea + say, after nay-say.
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